Shafting.



- PATENTED OCT. 23, 1906. H. K. SANDELL.

SHAFTING.

APPLICATION FILED rm. a, 1906.

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PATENT-ED OCT. 23

- 'H. K. SANDELL.

SHAFTIN G.

AIPLIGATION FILED rmm, 1906.

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' UNITED STATES" PATENT orrrcn.

HENRY K. SANDELL, or-cnrcAeo, ILLINOIS, assrenon To ums NOVELTY COMPANY, OF CHICAGO, ILLINOIS, A OOBPORATLON OF ILLINOIS.

SHAFTING- Patented Oct. 23,1906, 1

To all whom zit may concern:

Be it known that I, HENRY K. SANDELL, a citizen of the United States, residing at Chicago, in the county of Cook and State of-Illinois, have invented a new and useful Improvement in Shafting, of which the following is a specification.

My rimary object is to produce, in a syste'm shafting, for use more particularly in connection with light power transmission, novel means for automatically taking up slack, and thus constantly maintaining in a taut condition the flexible connecting means between the driven and driving pulleys ,whereby manual adjustment of the same isrendered unnecessary.

.Referring to' the accompanying drawings, which illustrate a preferred embodiment of my invention, Figure 1 is a broken view in elevation, partly in section, showing by full lines my improved shafting in connection with an. electric motor with the suspended shaft in one position and by dotted lines .the suspended shaft in another position; Fig. 2, asection taken at line 2 of Fig. 1 and viewed in the direction of the arrow, and Fig. 3 a

broken section taken at line 3 of Fig. 1 and viewed in the direction of the arrow.

A'is a base, and B an electric motor constituting a prime mover, mounted on thebase and provided with a grooved pulleyB on its motor-shaft B. C is a support, shown in the formof a bar, extending along the top of the base near one of its marginal edges and securedthereto by flat springs c c, which tend to tilt the support on one of its edges in a direction away from the motor, as shown in Figs. 2 and 3). Near each end of the support and on its top side is mounted a bearingguide support or guide-loop D, each provided with an elongated guide-slot D.

E is a shaft mounted in bearings E E near its opposite ends and shown as carrying a weight E The bearings E have a flattened portion 6, which is positioned in its respective guide-slot D to be readily movable and guided up and down therein, a shoulder e on each of the bearings serving to confine the shaft against lateral movement.

E E are grooved fixed pulleys on opposite ends of the shaft E, and E is a grooved fixed ulley secured on the shaft intermediate 0 the end pulleys, the pulley E being drive-pulley on said suspended sha connected with the motor-pulley B by an endless belt The pulley E is connectedby an endless elt .g with a grooved pulley F,

mounted on a shaft F, for transmitting power for any suitable purpose, and the .pulley E is connected by an endless belt h,with a grooved pulley G on a shaft G for similarly transmitting power. It will thus be i seen that the shaft E is suspended in the guideslots by the belts g and h, respectively. Thus the belts are always maintained taut by the gravity of the suspended shaft (supplemented by that of the Weight E, if required) regardless of the stretching of the belts or of unequal stretching thereof (indicated in dot ted lines in Fig. 1) and without the necessity for manual adjustment.

' The spring-pressed support is provided to constantly maintain'the belt f in taut condition re ardless of the position of the suspended sha t in the guide-slots through the action of the springs, which tend constantly to draw the shaft away from the motor.

It is manifestthat whe it is desired to drive but one shaft from the driven shaft the latter may be mounted to adapt it to be movable up and down at one end only,with its other end fixedly journaled, and that any suitable endless driving means for connecting the pulleys may be employed.

What I claim as new, and desire to secure by Letters Patent, is

1. In combination, a motor-shaft provided with a drive-pulley, upper rotary shaft-supported pulleys, a lower shaft carrying pulleys on its ends, endless belts by which said lower shaft is suspended and wholly supported at its said pulleys from said upper fpulleys, a

t between its ends, and an endless-belt connection between said last-named pulley and said pulley on the motor-shaft.

9a 2. In combination with the rotary shaft of a motor, a spring-support, an upper journaled shaft and a lower shaft, an endless belt for transmittin power from said lower to said upper sha t and by which said lower 10o shaft is suspended from said upper shaft,

- guiding means on said support, in which said lower shaft is journaled to permit it to move up and down, and an endless-belt connection between said motor-shaft and said lower shaft, for the purpose set forth.

3. In combination with the rotary shaft of a motor, a spring-support, upper journaled shafts and a lower shaft, endless belts connecting said upper shafts with said lower shaft and by which-the lower shaft is suspended from the upper shafts, guide-loops rising from said support, journal-bearings on said lower shaft reciprocably confined in said loops,.and an endless-belt connection bel tween said motor-shaft and said lower shaft, for the purpose set forth.

4. In combination with the rotary shaft of a motor, carrying a pulley, a spring-fastened support adjacent to said motor, upper journaled pulley-carrying shafts, and a lower 

